Post by Pooh on Jul 24, 2010 7:26:07 GMT
Additional difficulties from alternative sources:
Lindzen, , Ph.D., Richard, and Yong-Sang Choi. “On the determination of climate feedbacks from ERBE data.” Geophysical Research Letters 36, no. 16705 (August 26, 2009): 6.
www.leif.org/EOS/2009GL039628-pip.pdf
Trenberth, Kevin, and John Fasullo. “"Missing" heat may affect future climate change.” Science UCAR: University Corporation for Atmospheric Research, April 15, 2010. www2.ucar.edu/news/missing-heat-may-affect-future-climate-change
Pielke, Sr, Roger A., Kevin Trenberth, and Josh Willis. “Is There “Missing” Heat In The Climate System? My Comments On This NCAR Press Release.” Scientific Blog. Climate Science: Roger Pielke Sr., April 16, 2010. pielkeclimatesci.wordpress.com/2010/04/16/is-there-missing-heat-in-the-climate-system-my-comments-on-this-ncar-press-release/
Lindzen, , Ph.D., Richard, and Yong-Sang Choi. “On the determination of climate feedbacks from ERBE data.” Geophysical Research Letters 36, no. 16705 (August 26, 2009): 6.
www.leif.org/EOS/2009GL039628-pip.pdf
"Climate feedbacks are estimated from fluctuations in the outgoing radiation budget from the latest version of Earth Radiation Budget Experiment (ERBE) nonscanner data. It appears, for the entire tropics, the observed outgoing radiation fluxes increase with the increase in sea surface temperatures (SSTs). The observed behavior of radiation fluxes implies negative feedback processes associated with relatively low climate sensitivity. This is the opposite of the behavior of 11 atmospheric models forced by the same SSTs. Therefore, the models display much higher climate sensitivity than is inferred from ERBE, though it is difficult to pin down such high sensitivities with any precision. Results also show, the feedback in ERBE is mostly from shortwave radiation while the feedback in the models is mostly from longwave radiation. Although such a test does not distinguish the mechanisms, this is important since the inconsistency of climate feedbacks constitutes a very fundamental problem in climate prediction."Spencer, Ph.D., Roy. “Satellite and Climate Model Evidence Against Substantial Manmade Climate Change.” Scientific Blog. Global Warming, December 29, 2008. www.drroyspencer.com/research-articles/satellite-and-climate-model-evidence/
"It is well known that most of that warming is NOT due to the direct warming effect of the CO2 by itself, which is relatively weak. It is instead due to indirect effects (positive feedbacks) that amplify the small amount of direct warming from the CO2. The most important warmth-amplifying feedbacks in climate models are clouds and water vapor."Spencer, Ph.D., Roy W. “Global Warming: Has the Climate Sensitivity Holy Grail Been Found?,” June 30, 2008. www.weatherquestions.com/Climate-Sensitivity-Holy-Grail.htm
"Cloud feedbacks are generally considered to be the most uncertain of feedbacks, although all twenty climate models tracked by the Intergovernmental Panel on Climate Change (IPCC) now suggest cloud feedbacks are positive (warmth-amplifying) rather than negative (warmth-reducing). The only question in the minds of most modelers is just how strong those positive feedbacks really are in nature. This article deals with how feedbacks are estimated from satellite observations of natural climate variability…and describes a critical error in interpretation which has been made in the process."
"The new interpretation suggests a very low sensitivity. If the new sensitivity estimate is accurate, it would suggest only 0.5 deg. C of manmade warming by the year 2100. The new sensitivity estimate also suggests that warming over the last century can not be explained by human greenhouse gas emissions alone, but instead might require a mostly natural explanation."However, the AGW advocates are missing some predicted heat. (Perhaps it has escaped?)
Trenberth, Kevin, and John Fasullo. “"Missing" heat may affect future climate change.” Science UCAR: University Corporation for Atmospheric Research, April 15, 2010. www2.ucar.edu/news/missing-heat-may-affect-future-climate-change
Pielke, Sr, Roger A., Kevin Trenberth, and Josh Willis. “Is There “Missing” Heat In The Climate System? My Comments On This NCAR Press Release.” Scientific Blog. Climate Science: Roger Pielke Sr., April 16, 2010. pielkeclimatesci.wordpress.com/2010/04/16/is-there-missing-heat-in-the-climate-system-my-comments-on-this-ncar-press-release/